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New simulation model for freight wagons with UIC link suspension

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The previous freight wagon model developed at KTH is able to explain many of the phenomena observed in tests. In some cases, however, simulated and measured running behaviour differ. Therefore, in this paper, a new simulation model is presented and validated with on-track test results. The performance of standard two-axle freight wagons is investigated. The most important parameters for the running behaviour of the vehicle are the suspension characteristics. The variation in characteristics between different wagons is large due to geometrical tolerances of the components, wear, corrosion, moisture or other lubrication. The influence of the variation in suspension characteristics and other parameters on the behaviour of the wagon on tangent track and in curves is discussed. Finally, suggestions for improvements of the system are made.

Keywords: dynamics; freight wagon; link suspension; modelling; ride quality; simulation; test

Document Type: Research Article


Affiliations: 1: KTH Rail Vehicles, Royal Institute of Technology (KTH), Stockholm, Sweden 2: AB DEsolver, Ostersund, Sweden

Publication date: September 1, 2008

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